US4792509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light receiving member for use in electrophotography
Assignee: Canon Inc
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Filing: 1987-02-02
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Granted: 1988-12-20
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Expires: 2007-02-02
Abstract
Abstract There is provided an improved light receiving member for use in electrophotography comprising a substrate for electrophotography and a light receiving layer constituted by a charge injection inhibition layer formed of a polycrystal material containing silicon atoms as the main constituent atoms and an element for controlling the conductivity which functions to prevent a charge from being injected from the side of the substrate, a photoconductive layer formed of an amorphous material containing silicon atoms as the main constituent atoms and a surface layer formed of an amorphous material containing silicon atoms, carbon atoms and hydrogen atoms, the amount of the hydrogen atoms contained in the surface layer being in the range from 41 to 70 atomic %. The light receiving layer may have a contact layer and/or an absorption layer of light having a long wavelength.
Inventors
- 👤 Shigeru Shirai
- 👤 Keishi Saitoh
- 👤 Takayoshi Arai
- 👤 Minoru Kato
- 👤 Yasushi Fujioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:11
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08214; G03G5/0825; G03G5/08235; G03G5/08242; G03G5/08257
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
114 words
A light receiving member for use in electrophotography comprising a substrate for electrophotography and a light receiving layer constituted by a charge injection inhibition layer formed of a polycrystal material containing silicon atoms as the main constituent atoms and an element for controlling the conductivity which functions to prevent a charge from being injected from the side of the substrate, a photoconductive layer formed of an amorphous material containing silicon atoms as the main constituent atoms and a surface layer formed of an amorphous material containing silicon atoms, carbon atoms and hydrogen atoms, the amount of the hydrogen atoms contained in the surface layer being in the range from 41 to 70 atomic %.
Claim 2
Dependent Claim
114 words
A light receiving member for use in electrophotography comprising a substrate for electrophotography and a light receiving layer constituted by a charge injection inhibition layer formed of a polycrystal material containing silicon atoms as the main constituent atoms and an element for controlling the conductivity which functions to prevent a charge from being injected from the side of the substrate, a photoconductive layer formed of an amorphous material containing silicon atoms as the main constituent atoms and a surface layer formed of an amorphous material containing silicon atoms, carbon atoms and hydrogen atoms, the amount of the hydrogen atoms contained in the surface layer being in the range from 41 to 70 atomic %.
Claim 3
Dependent Claim
39 words
A light receiving mmmber for use in electrophotography according to claim 1, wherein the charge injection inhibition layer contains the element for controlling the conductivity in the state of being distributed largely in the region adjacent to the substrate.
Claim 4
Dependent Claim
35 words
A light receiving member for use in electrophotography according to claim 1 or claim 2, wherein the charge injection prohibition layer contains at least one kind selected from nitrogen atoms, oxygen atoms and carbon atoms.
Claim 5
Dependent Claim
42 words
A light receiving member according to claim 2 wherein the charge injection inhibition layer contains at least one kind selected from nitrogen atoms, oxygen atoms and carbon atoms in the state of being distributed largely in the region adjacent to the substrate.
Claim 6
Dependent Claim
34 words
A light receiving member for use in electrophotography according to claim 1, wherein the photoconductive layer contains at least one kind selected from nitrogen atoms, oxygen atoms and an element for controlling the conductivity.
Claim 7
Dependent Claim
28 words
A light receiving member according to claim 1, wherein the element for controlling the conductivity is an element of the group III or V of the periodic table.
Claim 8
Dependent Claim
61 words
A light receiving member according to any of claim 1, wherein a contact layer formed of an amorphous material containing silicon atoms as the main constituent atoms, at least one kind selected from nitrogen atoms, oxygen atoms and carbon atoms, and in case where necessary, hydrogen atoms or/and halogen atoms is disposed between the substrate and the charge injection inhibition layer.
Claim 9
Dependent Claim
59 words
A light receiving member according to claim 1, wherein a contact layer formed of a polycrystal material containing silicon atoms as the main constituent atoms, at least one kind selected from nitrogen atoms, oxygen atoms and carbon atoms, and in case where necessary, hydrogen atoms or/and halogen atoms is disposed between the substrate and the charge injection inhibition layer.
Claim 10
Dependent Claim
145 words
A light receiving member for use in electrophotography comprising a substrate for electrophotography and a light receiving layer constituted by an absorption layer of light having a long wavelength (hereinafter referred to as "IR layer") formed of either a polycrystal material or an amorphous material containing silicon atoms and germanium atoms, a charge injection inhibition layer formed of a polycrystal material containing silicon atoms as the main constituent atoms and an element for controlling the conductivity which functions to prevent a charge from being injected from the side of the substrate, a photoconductive layer formed of an amorphous material containing silicon atoms as the main constituent atoms and a surface layer formed of an amorphous material containing silicon atoms, carbon atoms and hydrogen atoms, the amount of the hydrogen atoms contained in the surface layer being in the range from 41 to 70 atomic %.
Claim 11
Dependent Claim
145 words
A light receiving member for use in electrophotography comprising a substrate for electrophotography and a light receiving layer constituted by an absorption layer of light having a long wavelength (hereinafter referred to as "IR layer") formed of either a polycrystal material or an amorphous material containing silicon atoms and germanium atoms, a charge injection inhibition layer formed of a polycrystal material containing silicon atoms as the main constituent atoms and an element for controlling the conductivity which functions to prevent a charge from being injected from the side of the substrate, a photoconductive layer formed of an amorphous material containing silicon atoms as the main constituent atoms and a surface layer formed of an amorphous material containing silicon atoms, carbon atoms and hydrogen atoms, the amount of the hydrogen atoms contained in the surface layer being in the range from 41 to 70 atomic %.
Claim 12
Dependent Claim
39 words
A light receiving member for use in electrophotography according to claim 9, wherein the charge injection inhibition layer contains the element for controlling the conductivity in the state of being distributed largely in the region adjacent to the substrate.
Claim 13
Dependent Claim
35 words
A light receiving member for use in electrophotography according to claim 9 or claim 10, wherein the charge injection prohibition layer contains at least one kind selected from nitrogen atoms, oxygen atoms and carbon atoms.
Claim 14
Dependent Claim
42 words
A light receiving member according to claim 10, wherein the charge injection inhibition layer contains at least one kind selected from nitrogen atoms, oxygen atoms and carbon atoms in the state of being distributed largely in the region adjacent to the substrate.
Claim 15
Dependent Claim
34 words
A light receiving member for use in electrophotography according to claim 9, wherein the photoconductive layer contains at least one kind selected from nitrogen atoms, oxygen atoms and an element for controlling the conductivity.
Claim 16
Dependent Claim
36 words
A light receiving member for use in electrophotography according to claim 9, wherein the IR layer contains at least one kind selected from an element for controlling the conductivity, oxygen atoms, nitrogen atoms and carbon atoms.
Claim 17
Dependent Claim
28 words
A light receiving member according to claim 9, wherein the element for controlling the conductivity is an element of the group III or V of the periodic table.
Claim 18
Dependent Claim
53 words
A light receiving member according to claims 9, wherein the light receiving layer has a contact layer formed of an amorphous material containing silicon atoms as the main constituent atoms, at least one kind selected from nitrogen atoms, oxygen atoms and carbon atoms, and in case where necessary, hydrogen atoms or/and halogen atoms.
Claim 19
Dependent Claim
53 words
A light receiving member according to claim 9, wherein the light receiving layer has a contact layer formed of a polycrystal material containing silicon atoms as the main constituent atoms, at least one kind selected from nitrogen atoms, oxygen atoms and carbon atoms, and in case where necessary, hydrogen atoms or/and halogen atoms.
References Cited (Backward Citations)
US4678731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-20 | 1992-06-20 | 1992-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-20 | 1996-06-20 | 1996-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-20 | 2000-06-20 | 2000-12-20 | $7700.00 | Window Closed / Lapsed |